CN112983346A - Accompanying intelligent well cementation device and method with adjustable vibration parameters - Google Patents
Accompanying intelligent well cementation device and method with adjustable vibration parameters Download PDFInfo
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- CN112983346A CN112983346A CN202110248961.4A CN202110248961A CN112983346A CN 112983346 A CN112983346 A CN 112983346A CN 202110248961 A CN202110248961 A CN 202110248961A CN 112983346 A CN112983346 A CN 112983346A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B28/00—Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
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- Mining & Mineral Resources (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
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Abstract
The invention discloses a following intelligent well cementation device with adjustable vibration parameters, which comprises a vibration head, wherein the vibration head comprises a metal shell, a vibration execution module, a positioning module, a program control processor and a power supply module, the metal shell is closed, and the vibration execution module, the positioning module, the program control processor and the power supply module are all arranged in the metal shell; the vibration execution module comprises a vibration wheel and a speed regulating motor capable of driving the vibration wheel to vibrate, the positioning module comprises an electronic gyroscope and a data acquisition and processing circuit electrically connected with the electronic gyroscope, the speed regulating motor and the data acquisition and processing circuit are respectively electrically connected with the program control processor, and the speed regulating motor, the electronic gyroscope, the data acquisition and processing circuit and the program control processor are respectively electrically connected with the power module. The following intelligent well cementation method with adjustable vibration parameters writes a control strategy program into program control processing, and adjusts the frequency of a vibration execution module according to different positions in the descending process of a vibration head. The invention improves the well cementation effect.
Description
Technical Field
The invention relates to the technical field of petroleum drilling and well completion, in particular to a following intelligent well cementation device and method with adjustable vibration parameters.
Background
The vibration cementing is a necessary step in the well completion process, and the well bottom fluid mechanical vibration or well head mechanical vibration is known as a method, the vibration wave is loaded on the well and transmitted to the underground through a fluid or a cementing head, the vibration energy which can be transmitted to the underground is limited because the vibration wave is greatly damped, and the curing effect of the vibration is poorer and the use effect is poorer as the vibration is closer to the well bottom.
The patent with application number 201110035683.0 discloses a following vibration well cementation method, which adopts a vibration head with a rubber sleeve plug to be preset in a cement head, wherein vibration waves are generated by a speed regulating motor with an eccentric rotor, and after the injection of the front liquid and the cement slurry is finished, the displacement liquid is started to push the vibration head to move downwards in an oil layer casing pipe, so as to push the front liquid and the cement slurry to enter a well cementation part. And when the cement slurry moves downwards, the speed regulating motor rotates to send out vibration waves, so that the well wall resonates, and the cement slurry is compacted. In the method, a program for controlling the motion mode of the speed regulating motor needs to be written into a program processor in a vibration head in advance by a computer, a trigger signal for starting vibration is triggered by a water sensitive switch, when the replacement fluid starts to be injected, the water sensitive switch is triggered, the program starts to time, and the part where the vibration head is located is estimated according to the injection speed of the replacement fluid so as to finish the following vibration and the final stop of the vibration. The method belongs to an open-loop control method, the position of a vibration head is completely preset by a calculated value, and working parameters can not be adjusted in the middle. In practical application, sometimes the rubber plug sealing device is used for cement slurry injected under high pressure, water in the cement slurry can possibly flow back to the upper part of the vibrating head, so that the water sensitive switch is triggered by mistake, a subsequent follow-up vibrating program is executed by mistake, a vibrating and curing process of the well is mistaken, and the curing effect cannot be guaranteed. The method has another problem that the judgment of the position of the vibration head is completely controlled by time, in the actual operation process, because the injection resistance of the underground cement slurry is constantly changed, the vibration head pushed by the replacement fluid cannot move at a constant speed, the judgment of the position by the program is often inaccurate, and the subsequent vibration mode preset according to the position does not correspond to the requirement of the position, thereby influencing the actual effect of well cementation.
Disclosure of Invention
The invention aims to provide a following intelligent well cementation device and method with adjustable vibration parameters, which are used for solving the problems in the prior art and improving the well cementation effect.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a following intelligent well cementation device with adjustable vibration parameters, which comprises a vibration head, wherein the vibration head comprises a metal shell, a vibration execution module, a positioning module, a program control processor and a power supply module, the metal shell is closed, and the vibration execution module, the positioning module, the program control processor and the power supply module are all arranged in the metal shell; the vibration execution module comprises a vibration wheel and a speed regulating motor capable of driving the vibration wheel to vibrate, the positioning module comprises an electronic gyroscope and a data acquisition and processing circuit electrically connected with the electronic gyroscope, the speed regulating motor and the data acquisition and processing circuit are respectively electrically connected with the program control processor, and the speed regulating motor, the electronic gyroscope, the data acquisition and processing circuit and the program control processor are respectively electrically connected with the power module.
Preferably, a bluetooth module electrically connected with the program control processor is further arranged in the metal shell.
Preferably, the vibrating head is arranged in the cement head, the vibrating head is connected with the cement head in a sealing mode through a rubber sleeve, and the rubber sleeve is sleeved on the metal shell.
Preferably, the bottom end of the metal shell is further provided with a touch head electrically connected with the program control processor.
The invention also discloses a following intelligent well cementation method with adjustable vibration parameters, which comprises the following steps:
(1) designing technological parameters required by the cementing vibration at this time according to the drilling data and the oil well size data of the oil well, and compiling a control strategy program;
(2) establishing Bluetooth communication with a Bluetooth module in the accompanied intelligent well cementation device with adjustable vibration parameters through mobile phone Bluetooth, and writing the control strategy program into a program control processor;
(3) injecting the pad fluid and the cement slurry into the cement head through the pad fluid and cement slurry channel;
(4) placing a vibrating head into a cement head, injecting displacement fluid into the cement head through a displacement channel, extracting a stop pin in the cement head, pushing the vibrating head to move downwards by the displacement fluid, and starting a vibration working mode by the vibrating head;
(5) the positioning module continuously detects the current position along with the descending of the vibration head and sends a position signal to the program control processor in real time, and a control strategy program in the program control processor triggers and adjusts the working state of the vibration execution module according to different position signals so that the vibration execution module outputs vibration waves meeting the corresponding position requirements;
(6) and after the vibrating head is contacted with the float collar, the touch head is triggered and sends a signal to the program-controlled processor, the program-controlled processor controls the vibration execution module to start a delayed vibration mode until the program-controlled processor controls the vibration execution module to stop vibrating before cement is initially set, and the cementing operation is finished.
Compared with the prior art, the invention has the following technical effects:
the following intelligent well cementation device and method with adjustable vibration parameters effectively improve the well cementation effect of petroleum drilling and well completion. The following intelligent well cementation device and the method with adjustable vibration parameters ensure the filling and compaction of well cementation cement slurry and improve the well cementation quality by generating mechanical vibration which resonates with a well wall at different parts of a well section through the vibration head; the vibration head has a position detection function, and can adjust the working parameters of the vibration execution module according to the position at any time to obtain vibration waves meeting the requirements of different well depths and obtain the optimal well cementation effect; the vibrating head is of a full-sealed pressure-resistant structure, so that the working reliability is good, and the anti-explosion performance is better; adopt bluetooth communication to write in the procedure, make things convenient for field operation, and can teletransmission operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a first structural schematic diagram of the following intelligent well cementing device with adjustable vibration parameters;
FIG. 2 is a schematic structural diagram II of the following intelligent well cementing device with adjustable vibration parameters;
wherein: 1. a vibrating head; 2. a metal housing; 3. a rubber sleeve; 4. a positioning module; 5. a program controlled processor; 6. a power supply module; 7. a vibration execution module; 8. displacing the channel; 9. a pad fluid and cement slurry channel; 10. a cement head cover; 11. a stop pin; 12. a cementing head; 13. connecting a cement head short joint; 14. an oil layer casing; 15. a wellbore; 16. returning the cement to a high point; 17. pre-solution; 18. floating hoops; 19. floating shoes; 20. and (4) the bottom of the well.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The invention aims to provide a following intelligent well cementation device and method with adjustable vibration parameters, which are used for solving the problems in the prior art and improving the well cementation effect.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 and 2: the embodiment provides a following intelligent well cementation device with adjustable vibration parameters, which comprises a vibration head 1, wherein the vibration head 1 comprises a metal shell 2, a vibration execution module 7, a positioning module 4, a program control processor 5 and a power module 6.
The metal shell 2 is sealed and pressure-resistant, and the vibration execution module 7, the positioning module 4, the program control processor 5 and the power supply module 6 are all arranged in the metal shell 2; the vibration execution module 7 comprises a vibration wheel and a speed regulating motor capable of driving the vibration wheel to vibrate, and the vibration wheel of the vibration wheel can vibrate at different frequencies by regulating the rotating speed of the speed regulating motor; the positioning module 4 comprises an electronic gyroscope and a data acquisition processing circuit electrically connected with the electronic gyroscope, the speed regulating motor and the data acquisition processing circuit are respectively electrically connected with the program control processor 5, and the speed regulating motor, the electronic gyroscope, the data acquisition processing circuit and the program control processor 5 are respectively electrically connected with the power module 6.
The metal shell 2 is also internally provided with a Bluetooth module which is electrically connected with the program control processor 5, and the vibrating head 1 can establish Bluetooth communication with electronic equipment such as a mobile phone and the like through the Bluetooth module, so that a compiled program can be conveniently written into the program control processor 5 through the electronic equipment such as the mobile phone and the like; it should be noted that the antenna of the bluetooth module passes through the through hole on the metal casing 2 to extend outside the metal casing 2, so as to avoid the interference of the metal casing 2 on the signal of the bluetooth module, and the antenna of the bluetooth module is connected with the through hole on the metal casing 2 in a sealing manner.
The vibrating head 1 is arranged in a cement head 12, the vibrating head 1 is hermetically connected with the cement head 12 through a rubber sleeve 3, and the rubber sleeve 3 is sleeved on a metal shell 2. In the present embodiment, the rubber boot 3 is conformed on the metal shell 2 by a vulcanization process. The rubber sleeve 3 has reliable isolation and sealing capacity, so that the displacement liquid can not enter the cement paste, and meanwhile, the water in the cement paste can not flow back to the displacement liquid.
The bottom end of the metal shell 2 is also provided with a touch head which is electrically connected with the program control processor 5. When the vibrating head 1 is in close contact with the floating collar 18 in the cement head 12, the touch head is triggered and sends a signal to the program-controlled processor 5, so that the program-controlled processor 5 is assisted to confirm that the vibrating head 1 descends to a stop position, and then the program-controlled processor 5 controls the vibration execution module 7 to enter a delayed vibration mode until the program-controlled processor 5 controls the vibration execution module 7 to stop vibrating before cement is initially set.
Referring to fig. 1 and 2, the well comprises a cement head cover 10, a cement head 12, a connecting cement head short joint 13, an oil layer casing 14 and a well hole 15, wherein the cement head 12 is in a hollow tubular shape, and the bottom end of the cement head 12 is connected with the top end of the oil layer casing 14 through the connecting cement head short joint 13; the cement head 12 is provided with a displacement channel 8 and a preposed liquid and cement slurry channel 9, the displacement channel 8 is positioned above the preposed liquid and cement slurry channel 9, a float collar 18 and a float shoe 19 are arranged in a shaft bottom 20, a horizontal stop pin 11 is arranged in the middle of the cement head 12, the stop pin 11 can be inserted or pulled out, the stop pin 11 is used for limiting the vibration head 1, and the vibration head 1 can be made to descend after the stop pin 11 is pulled out. It should be noted that the bottom of the casing 14 may be bent to form a horizontal portion in different wells, or the casing 14 may be vertical as a whole; two different configurations of the production casing 14 are shown in figures 1 and 2.
The embodiment also discloses a vibration parameter adjustable following intelligent well cementation method based on the vibration parameter adjustable following intelligent well cementation device, which comprises the following steps:
(1) therefore, the required optimum vibration load and frequency are constantly changed according to the implantation depth (i.e., spatial position) of the vibration head 1. When the size, the depth and the material of the well body and the cementing head 12 are fixed, the vibration parameters required by the vibration head 1 can be obtained in advance through modeling calculation, so that the process parameters required by the cementing vibration at this time are designed according to the drilling data and the oil well size data of an oil well and are compiled into a control strategy program;
(2) bluetooth communication is established through a mobile phone Bluetooth and a Bluetooth module in the accompanied intelligent well cementation device with adjustable vibration parameters, and a control strategy program is written into a program control processor 5;
(3) injecting the pad fluid 17 and the cement slurry into the cement head 12 through the pad fluid 17 and the cement slurry channel;
(4) placing the vibrating head 1 into a cement head 12, injecting displacement fluid into the cement head 12 through a displacement channel 8, extracting a stop pin in the cement head 12, and starting a vibration working mode of the vibrating head 1 after the displacement fluid pushes the vibrating head 1 to move downwards to a cement return high point 16; with the continuous descending of the vibrating head 1, as the cement slurry is continuously extruded into the well cementation area, the mass of the area to be vibrated is continuously increased, and the natural frequency is also continuously changed. (5) Along with the descending of the vibration head 1, the positioning module 4 continuously detects the current position and sends a position signal to the program control processor 5 in real time, and a control strategy program in the program control processor 5 triggers and adjusts the working state of the vibration execution module 7 according to different position signals, so that the vibration execution module 7 outputs vibration waves meeting the corresponding position requirements;
(6) after the vibrating head 1 contacts the float collar 18, the touch head is triggered and sends a signal to the program control processor 5, the program control processor 5 controls the vibration execution module 7 to start a time-delay vibration mode until the program control processor 5 controls the vibration execution module 7 to stop vibrating before cement initial setting, and the cementing operation is completed.
Compared with the traditional rough mode of positioning according to time, the following intelligent well cementation method with adjustable vibration parameters has better accuracy and reliability, and avoids timing errors and misoperation caused by false triggering of the water sensitive switch. Because a water sensitive switch is cancelled, the vibrating head 1 can be made into a totally-enclosed structure, the pressure resistance of the vibrating head is improved, and the vibrating head has better explosion-proof performance in the environment of natural gas existing under an oil well. Another difference between the intelligent following well cementation device with adjustable vibration parameters and the traditional following well cementation vibrating head 1 is that the control program is written in through mobile phone bluetooth wireless communication, so that the procedures of connecting and installing a computer and writing in on an oil well site can be avoided, and remote operation can be realized. Finally, as the vibration head 1 moves downwards continuously, when the cement paste is completely extruded, when the device is pressed on the floating hoop 18 at the bottom end of the oil layer casing 14, the vibration head 1 stops moving downwards, and finally stops after continuously maintaining vibration for a certain time. In order to ensure the accuracy of the stop position, in addition to the position parameters measured by the positioning device, the vibrating head 1 is also provided with a touch head, the stop position can be confirmed in an auxiliary way, the vibrating head 1 enters a delayed vibration mode, the delayed vibration is continued until the work is stopped before the initial setting of cement, and the well cementation operation is finally finished.
In the description of the present invention, it should be noted that the terms "top", "bottom", "horizontal", "inside", "outside", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (5)
1. The utility model provides a vibration parameter adjustable retinue intelligence well cementation device which characterized in that: the vibration head comprises a metal shell, a vibration execution module, a positioning module, a program control processor and a power module, wherein the metal shell is closed, and the vibration execution module, the positioning module, the program control processor and the power module are all arranged in the metal shell; the vibration execution module comprises a vibration wheel and a speed regulating motor capable of driving the vibration wheel to vibrate, the positioning module comprises an electronic gyroscope and a data acquisition and processing circuit electrically connected with the electronic gyroscope, the speed regulating motor and the data acquisition and processing circuit are respectively electrically connected with the program control processor, and the speed regulating motor, the electronic gyroscope, the data acquisition and processing circuit and the program control processor are respectively electrically connected with the power module.
2. The vibrating parameter adjustable retinue intelligent cementing device according to claim 1, characterized in that: and a Bluetooth module electrically connected with the program control processor is also arranged in the metal shell.
3. The vibrating parameter adjustable retinue intelligent cementing device according to claim 1, characterized in that: the vibrating head is arranged in the cement head and is in sealing connection with the cement head through a rubber sleeve, and the rubber sleeve is sleeved on the metal shell.
4. The vibrating parameter adjustable retinue intelligent cementing device according to claim 1, characterized in that: and the bottom end of the metal shell is also provided with a touch head electrically connected with the program control processor.
5. A following intelligent well cementation method with adjustable vibration parameters is characterized by comprising the following steps:
(1) designing technological parameters required by the cementing vibration at this time according to the drilling data and the oil well size data of the oil well, and compiling a control strategy program;
(2) establishing Bluetooth communication with a Bluetooth module in the accompanied intelligent well cementation device with adjustable vibration parameters through mobile phone Bluetooth, and writing the control strategy program into a program control processor;
(3) injecting the pad fluid and the cement slurry into the cement head through the pad fluid and cement slurry channel;
(4) placing a vibrating head into a cement head, injecting displacement fluid into the cement head through a displacement channel, extracting a stop pin in the cement head, pushing the vibrating head to move downwards by the displacement fluid, and starting a vibration working mode by the vibrating head;
(5) the positioning module continuously detects the current position along with the descending of the vibration head and sends a position signal to the program control processor in real time, and a control strategy program in the program control processor triggers and adjusts the working state of the vibration execution module according to different position signals so that the vibration execution module outputs vibration waves meeting the corresponding position requirements;
(6) and after the vibrating head is contacted with the float collar, the touch head is triggered and sends a signal to the program-controlled processor, the program-controlled processor controls the vibration execution module to start a delayed vibration mode until the program-controlled processor controls the vibration execution module to stop vibrating before cement is initially set, and the cementing operation is finished.
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